Would this do good to seal a usb port with a usb cord plugged in?

Not sure why you need to seal a USB PORT but I see no reason it wouldnt keep it waterproofed.

Is this stuff good for polyureathane bushings

Yes it is good for polyurethane bushings.....the lube they sell for the bushings is essentially rebranded dielectric grease too.

Has anyone tried this on fishing reel components? Is it light enough?

Definitely! I've been using it from 15 yrs or more... The main purpose, to seal the reel and protect screws from salt; for those that are not stainless I fill the hole with the grease to the top well, every where there is a screw head facing out. And all around the edge and bound surface of the gear cover, anywhere water can sip in! And in the gears, but I would mix it with other type to soften a bit for smooth reeling experience.

Mission Automotive Dielectric Silicone Paste Waterproof Marine Grease 8 Oz

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Description

💧 Stay dry, stay powered — the marine grease pros trust!

GENEROUS 8 OZ TUBE - Ample quantity for multiple maintenance tasks, perfect for professionals and DIY enthusiasts alike.
TRUSTED BY THOUSANDS - Rated 4.8 stars by over 4,700 users—join the community safeguarding their gear with confidence.
SILICONE BASED FORMULA - Premium dielectric silicone paste that prevents electrical shorts and enhances component longevity.
HEAT RESISTANT PERFORMANCE - Withstands extreme temperatures up to 570°F, ensuring reliable lubrication under pressure.
ULTIMATE WATERPROOF SHIELD - Keep your marine and electrical parts corrosion-free even in the harshest wet conditions.

MISSION AUTOMOTIVE Dielectric Silicone Paste is an 8 oz tube of premium waterproof marine grease made in the USA. Designed to prevent corrosion and lubricate electrical and marine components, it boasts a high flash point of 570°F and a silicone-based formula that ensures durable, reliable protection in extreme environments. Highly rated by thousands, it’s the go-to choice for professionals seeking long-lasting performance.

Specifications

ASIN	B016E5E59G
Brand	MISSION AUTOMOTIVE
Brand Name	MISSION AUTOMOTIVE
Container Type	Tube
Country of Origin	USA
Customer Reviews	4.8 out of 5 stars 4,789 Reviews
Flash Point	570 Degrees Fahrenheit
Item Form	Paste
Item Weight	8 Ounces
Liquid Volume	237 Millilitres
Material	Silicone
Material Type	Silicone
Model Number	8542064566
Package Information	Tube
Part Number	08946
Recommended Uses For Product	marine equipment, electrical components
Specific Uses For Product	Prevent Corrosion, Lubricate in Marine Environments
UPC	638037142402
Unit Count	236.59 Milliliters

Reviews

B**D

Dielectric grease

Best thing on the market for getting your line and low voltage to work properly

1.02.2026

K**D

👍

ممتاز والتوصيل فى الوقت المناسب

11.05.2026

Z**D

Quality

Exactly as described

23.10.2024

M**I

Fantastic

27.01.2026

W**A

Very happy with this purchase, I will buy again.

Pure silicone paste is noticeably high quality. Essential for sealing electrical repairs, lubricating calipers, and any type of rubber, as pure silicone paste is the only 100% reliable solution that won't damage the rubber.

4.05.2026

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$U4862

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In stock

Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Uruguay.

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TrustScore 4.5 | 7,300+ reviews

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